text: // Copyright (C) 2013 Google Inc. All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are
  // met:
  //
  //    * Redistributions of source code must retain the above copyright
  // notice, this list of conditions and the following disclaimer.
  //    * Redistributions in binary form must reproduce the above
  // copyright notice, this list of conditions and the following disclaimer
  // in the documentation and/or other materials provided with the
  // distribution.
  //    * Neither the name of Google Inc. nor the names of its
  // contributors may be used to endorse or promote products derived from
  // this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  #ifndef StrokeData_h
  #define StrokeData_h
  
  #include "platform/PlatformExport.h"
  #include "platform/graphics/DashArray.h"
  #include "platform/graphics/Gradient.h"
  #include "platform/graphics/GraphicsTypes.h"
  #include "platform/graphics/Pattern.h"
  #include "third_party/skia/include/core/SkPaint.h"
  #include "third_party/skia/include/core/SkPathEffect.h"
  #include "wtf/Allocator.h"
  #include "wtf/PassRefPtr.h"
  #include "wtf/RefPtr.h"
  
  namespace blink {
  
  // Encapsulates stroke geometry information.
  // It is pulled out of GraphicsContextState to enable other methods to use it.
  class PLATFORM_EXPORT StrokeData final {
      DISALLOW_NEW();
  public:
      StrokeData()
          : m_style(SolidStroke)
          , m_thickness(0)
          , m_lineCap(SkPaint::kDefault_Cap)
          , m_lineJoin(SkPaint::kDefault_Join)
          , m_miterLimit(4)
      {
      }
  
      StrokeStyle style() const { return m_style; }
      void setStyle(StrokeStyle style) { m_style = style; }
  
      float thickness() const { return m_thickness; }
      void setThickness(float thickness) { m_thickness = thickness; }
  
      void setLineCap(LineCap cap) { m_lineCap = (SkPaint::Cap)cap; }
  
      void setLineJoin(LineJoin join) { m_lineJoin = (SkPaint::Join)join; }
  
      float miterLimit() const { return m_miterLimit; }
      void setMiterLimit(float miterLimit) { m_miterLimit = miterLimit; }
  
      void setLineDash(const DashArray&, float);
  
      // Sets everything on the paint except the pattern, gradient and color.
      // If a non-zero length is provided, the number of dashes/dots on a
      // dashed/dotted line will be adjusted to start and end that length with a
      // dash/dot.
      void setupPaint(SkPaint*, int length = 0) const;
  
      // Setup any DashPathEffect on the paint. If a non-zero length is provided,
      // and no line dash has been set, the number of dashes/dots on a dashed/dotted
      // line will be adjusted to start and end that length with a dash/dot.
      void setupPaintDashPathEffect(SkPaint*, int) const;
  
  private:
      StrokeStyle m_style;
      float m_thickness;
      SkPaint::Cap m_lineCap;
      SkPaint::Join m_lineJoin;
      float m_miterLimit;
      sk_sp<SkPathEffect> m_dash;
  };
  
  } // namespace blink
  
  #endif // StrokeData_h
  